To create New Dynamic Content, first you have to click on add new dynamic conent structure.
Dynamic-Content-Structure-‹-My-Store-—-WordPress
Then on next page,give title, click on edit structure
Add-New-Dynamic-Content-Structure-‹-My-Store-—-WordPress

Simple Structure

This is for simple Structure when every element is single,not repeating. First Copy the Whole Section which you want to dynamic Example:
Edit-Dynamic-Content-Structure-“About-Section”-‹-My-Store-—-WordPress
Required:
data-name: every tag should have a name.it can be anything.
Image:
data-input-type="image"
text:
data-input-type="text"
textarea:
data-input-type="textarea"
link:
data-input-type="link"

Reapeter Structure

Reapeter Simple Structure

This is for simple Structure when element is repeating. First Copy whole html you want to dynamic and then find the section which is repeating. keep only one and delete all other, now add data-input-type="repeater" data-repeater="simple" data-name="Testimonial Data" Example:
Edit-Dynamic-Content-Structure-“new”-‹-My-Store-—-WordPress (2)

Add data-child="repeater" to all child element

Limit

data-limit="2"

Order

data-order-by="Testimonial Box Author" data-order="desc"

Repeater Post type Structure

This is for simple Structure when element is repeating. First Copy whole html you want to dynamic and then find the section which is repeating. keep only one and delete all other, now add data-input-type="repeater" data-repeater="custom_post" data-name="Testimonial Data" Example:

Edit-Dynamic-Content-Structure-“Testimonial”-‹-My-Store-—-WordPress

Add data-child="repeater" to all child element

on every repeater you can filter by array refference https://developer.wordpress.org/reference/classes/wp_query/#taxonomy-parameters

Edit-Dynamic-Content-Structure-“Testimonial”-‹-My-Store-—-WordPress (1)
Dynamic-Content-Structure-‹-My-Store-—-WordPress (1)